I haven't been searching the Marketplace lately for other Vimeo apps, but it turns out that Vimeo released their official app earlier this month.
It's a nice looking app and I like it. The only thing it doesn't have is the ability to save videos to your memory card for off-line playback (which reduces your data usage if you ever want to watch it again). Then again, there may be legal reasons to this.
I've also realized that I haven't been able to allocate much of my time to work on Vimeo Droid, especially with having a 1 year old son who I like to spend time with. As a result, I've decided to open up the code to the public so that the Vimeo community of developers can contribute to this.